40172997804 has 12 divisors (see below), whose sum is σ = 93736994904. Its totient is φ = 13390999264.

The previous prime is 40172997803. The next prime is 40172997827. The reversal of 40172997804 is 40879927104.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×40172997804² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40172997803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1673874897 + ... + 1673874920.

It is an arithmetic number, because the mean of its divisors is an integer number (7811416242).

Almost surely, 2^40172997804 is an apocalyptic number.

It is an amenable number.

40172997804 is an abundant number, since it is smaller than the sum of its proper divisors (53563997100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40172997804 is a wasteful number, since it uses less digits than its factorization.

40172997804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3347749824 (or 3347749822 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 40172997804 in words is "forty billion, one hundred seventy-two million, nine hundred ninety-seven thousand, eight hundred four".